Motor-repair stand



A. H. JENKINS. MOTOR REPAIR STAND. APPLlcmou man mm1,

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Patentd' May 25, 1920.

2 SHEETS-SHEET 2.

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l UNITED ARTHUR H. JENKINS, 0F RULEVILLE, MISSISSIPPI.

MOTOR-REPAIR STAND.

Specification of Letters Patent.

Patented May 25, 1920.

Application led January 21, 1919. Serial No. 272,281.

To all whom it may Concern Be it known that I, ARTHUR H. JnNKINs, a citizen of the United States, residing at Ruleville, in the county of Sunflower and State of Mississip i, have invented certain new and useful mprovements in Motor- Repair Stands, of which the following is a specification.

The invention has for an ob'ect to provide an efficient support for ord motors adapted to be produced at a low cost, and to be mounted upon the top of an ordinary workbench or table. It is a further aim to provide a device of this character which will occupy a minimum amount of s ace and require a small amount of materia for its production. A further aim is to give an appliance of this kind which will be liable in a minimum degree to damage or derangement through use by the usual t pe of mechanic employed in garages. A furt er important aim is to present a revoluble motor carrying member which may be attached to the usual inlet water connection boss of the motor and so formed that the motor may be connected thereto while sitting in normal vertical or erect position upon the bench beside the standards of my device, and movedto an inverted position closely over the bench top at the opposite side of the device, or held at any intermediate position which ma be found desirable to facilitate access to t e motor for various operations in repair or assembly. A further object is to so construct the device that the motor carrying element may be rotated by means of a tool having a handle laterally projected from its outer part so formed that it may be used in the rear end of the hollow shaft of the transmission to rotate the crank shaft for burning in hearings when necessary, or for rotating the shaft and other parte for such other purposes as required.

Additional objects, and advantages, as well as features of invention ma become apparent in the embodiment of t e invention herein described and illustrated.

Figure l ofthe drawings shows a side elevation of the bearing stand and rotating clement,

Fig. 2-is a side view of a work bench and truck having my motor support thereon, the transmission and magneto parts being removed,

Fig. 3 is an end view of truck agd motor shown in Fig. 2, the transmission and magneto parts being in place upon the motor,

Fig. 4 is a plan View of a tool forming a part of my invention,

Fig. 5 is a top view of the rotating motor carrier.

Fig. 6 is al longitudinal sectional view of the appliance,

Fig. 7 is a cross section through one of the arms of the yoke 37.

There is illustrated a bench truck 10, or* dinarily built with a table portion 11 normally at a height of 26 to 3() inches from the floor. The legs 12 `at one end of the truck where the motor support is to be mounted, are shortened and have mounted thereon wheels 13 disposed at respective sides of the truck, the legs 14 at the opposite end. of the truck being long enough to engage the floor when the table 11 is level. Top stringcrs 1,5 are extended at ythe end opposite the wheels and formed into handles 16 by which the truck may be shifted.

Mounted upon the table portion 11 and spaced transversely of the truck, a short distance from a vertical plane including the axis of the wheels 13, there are bearing standards 17 and 18 respectively, each including a base plate 19 adapted to be secured upon the table top 11 by suitable bolts 20, and enlarged bearing portions 21 and 22, carried upon the upper end of the standards 17 and 18 respectively and ordinarily cast integrally therewith, the standard portion proper being T-shaped in cross section, as indicated. The bearing 22 is counterbored to form a reduced opening 23 in which there is revolubly engaged a collared shaft 24 disposed revolubly in a large hollow shaft 25 snugly engaged in the larger bore of the bearing 22 and projected in snug revoluble engagement through the bearing 21. The shaft 25 stops short of the reduced part of the bearing 22 slightly and is provided with a collar 26 engaging against the outer face of the bearing 21. The shaft 24 projects through the bearing 22 being threaded upon its extremity and engaged in a nut 27, one side of which is snugly engaged by an extension 28 of the medial web of the adjacent standard 18, whereby the nut is held against rotation. The shaft 25 may be eX- tended as far as desired in the op osite dironl the bearing 22, an is Provided with a terminal flange 29, having a suitable series of apertures 30 therethrough adapte-d to receive the dowels 31 of a spanner lever 32 by which the shaft 25 may be rotated, the lever 32 having a lateral or crank handle 33 by which it may be manipulated, this handle being suitably shaped in cross section to lit snugly in the usual rectangular opening in the end of the transmission shaft so that the crank shaft may be rotated with considerable power, the lever being ordinarily several feet in length. The shaft 24e is extended through the flange 29 and provided with a hand-wheel or other rotating means 35 in the present instance having a hub portion 36 snugly engaged against the outer part of the flange 29 to hold the shaft 21 against movement toward the nut 27. Between the standards 17 and 18 there is keyed upon the shaft 25 a motor carrier 37 in the form of a yoke, having suitably apertured arms engaged snugly upon the shaft and keyed thereto, the yoke terminat` ing outwardly in a neck portion 38 upon which there is formed a diamond shaped plate 39 corresponding in form to the usual water inlet boss 40 upon the motor 41 illustrated in Figs. 2 and 3. This plate 39 is disposed at such an angle to the part 38 that when the neck portion 38 extends diagonally upward, the plate 39 will be in vertical position at a level to snugly engage against the boss 40 of a motor set upon the table 11 closely beside the standards 17 and 18 as illustrated in Fig. 2. The standards are of such type and the relation of n the plate 39 to the axis of the shaft 25 is such that when the motor l1 is secured to the plate 39 as illustrated in solid lines in Fig. 2, while set in its normal erect position close beside the standards, rotation of the shaft 25 for half a turn in the proper direction will raise the motor 41 and carry it to'the opposite side of the standards into a completely inverted position, closely over thel table 11, but with suiicient space between the table and top of the cylinder casting to permit the pistons therein to operate through the top of the casting without striking the top of the table. It is my custom to provide blocks 42 as stops for the motor in the last named position, these blocks belng suitably disposed upon the top of the table to engage the end of the cylinder casting wlthout projecting over the cylinder bores. The plate`39 is suitably apertured at 1ts ends and of a proper thickness to permit its attachment to the inlet boss of the cyllnder casting by means of the usual cap screws used for attaching the water inlet connection to the motor. The standards 'are Y preferably located in position upon the table to permit the magneto parts and transmission to swing clear of the table and project downwardly past one side thereof when the motor is attached to the plate 39 and set in vertical position upon the table as indicated in Figs. 2 and 3. It is also preferable that the motor be attached in vertical position to the plate 39 while located inwardly of the standards upon the bench, so that it will swing toward the end of the bench away from the handles 1G when moved into inverted position. In this manner, the top or head of the motor cylinder castings will be presented toward the rear end of the bench when the motor is moved from erect position as indicated at A, to horizontal position as indicated at B, which is the most convenient position for grinding in valves, litting new pistons, and other operations frcquently involved in overhauling and repairing a motor.

Vilith this arrangement, when the motor is moved to inverted position as indicated at B in Fig. 2, the fitting of the main engine bearing may be most easily accomplished as they are presented near the end of the bench where they may be easily inspected, and ready access had thereto for motor, or in the opposite direction, as dotted in Fig. 3.

lWhat is claimed:

1. A support of the character described comprising two standards, a hollow shaft revoluble therein terminating short of the outer side of one of the standards, a motor carrying member keyed upon the shaft, between the standards, a shaft rcvoluble in the first mentioned shaft having screw threads atv its end outwardly of and adjacent the last mentioned standard, a nonrevoluble nut thereon, the first named shaft having thrust engagement with the outer side of the standard opposite the nut, and means to hold the second named shaft against movement toward the nut.

2. A support of the character described comprising two standards. a hollow shaft revoluble therein terminating short of the outer side of one of the standards, a motor carrying member keyed upon the shaft between the standards. a shaft revoluble in the first mentioned shaft having screw threads at its end outwardlyT of the last named standard, a nonrevoluble nut thereon, the first named shaft having thrust engagement. with the outer side of the standard opposite the nut, means to hold the second named shaft against movement toward the nut, a flange upon the first mentioned shaft having a plurality of apertures therein, said second named shaft being projected through the flange, means to rotate the second named shaft and means engage-able with the apertures to rotate the flange.

3. A motor support for mounting upon a bench top, comprising two standards having base flanges adapted to be set upon a bench table, a hollow shaft revoluble in the standards and stopping short of the outer side of one, said standard being counterbored, a collar upon the shaft outwardly of the other standard, a second shaft revoluble in the first mentioned shaft and having rotating means outwardly of the first mentioned shaft, including means to hold the second named shaft against movement toward the counterbored standard, a nut threaded upon the second shaft outwardly of the last mentioned standard, said last mentioned standard having a lug thereon located to engage snugly against the nut, and a motor carrying element keyed upon the hollow shaft snugly fitted between the standards, whereby rotation of the second shaft in one direction will compress the standards against the motor-carrying element to hold it in various adjusted positions.

4. A device of the character described comprising a table, a bearing element mounted at a low elevation thereover, a rotatable motor carrying member revoluble in the bearing including an arm extended laterally from the axis of rotation and having a terminal fasteningr plate constructed and positioned to engage a motor parallel to the axis of rotation snugly for attachment at a level above the bearing element, when the motor is set on the table, said arm being positioned to swing in a low arc over said table whereby a motor may be lifted thereby from the table and inverted on the table, and means to secure the motor carrying member in lvarious adjusted positions.

' In testimony whereof I have affixed my signature.

ARTHUR H. JENKINS. 

